Thermally conductive, corrosion resistant coatings

Abstract

A thermally conductive, corrosion resistant coating composition for use as a substrate coating. The thermally conductive, corrosion resistant coating composition comprising a waterborne polyurethane polymer, and at least one additive. Other thermally conductive, corrosion resistant coating compositions also comprise thermally conductive particles.

What is claimed is: 
     
         1 . A thermally conductive coating composition comprising a waterborne polyurethane polymer, and at least one additive. 
     
     
         2 . The thermally conductive coating composition of  claim 1 , wherein said at least one additive comprises at least one thinning agent. 
     
     
         3 . The thermally conductive coating composition of  claim 1 , wherein the waterborne polyurethane polymer comprises urethane. 
     
     
         4 . The thermally conductive coating composition of  claim 1 , wherein the waterborne polyurethane polymer comprises a waterborne aliphatic polyurethane dispersion. 
     
     
         5 . The thermally conductive coating composition of  claim 1 , wherein said at least one additive comprises at least one pigment. 
     
     
         6 . The thermally conductive coating composition of  claim 5 , wherein said pigments comprise at least one of carbon black, titanium dioxide, mica, silicas, silicates, and organic and inorganic pigments. 
     
     
         7 . The thermally conductive coating composition of  claim 1 , further comprising at least one thermally conductive particle. 
     
     
         8 . The thermally conductive coating composition of  claim 7 , wherein said thermally conductive particles comprise carbonaceous nanoparticles. 
     
     
         9 . The thermally conductive coating composition of  claim 8 , wherein said carbonaceous nanoparticles comprise carbon nanoplatelets. 
     
     
         10 . The thermally conductive coating composition of  claim 8 , wherein said carbonaceous nanoparticles comprise carbon nanotubes. 
     
     
         11 . The thermally conductive coating composition of  claim 7 , wherein said thermally conductive particles comprise one or more of: aluminum trihydrate (ATH), micaceous iron oxide (MIOX), conductive carbon black, wollastonite (CaSiO 3 ), surface-treated carbon fibers, and other macro-sized particles that are thermally conductive. 
     
     
         12 . The thermally conductive coating composition of  claim 7 , wherein said thermally conductive particles comprise one or more of: copper, silver, nickel, aluminum, gold, magnesium and other metal alloys that are thermally conductive. 
     
     
         13 . The thermally conductive coating composition of  claim 1 , further comprising at least one thermally conductive particle, wherein the waterborne polyurethane polymer comprises urethane, wherein said at least one thermally conductive particle comprises carbonaceous nanoparticles, and wherein said composition comprises 25% to less than 75% by weight urethane, more than 4% and less than 10% carbonaceous nanomaterial, and 5% to 50% water. 
     
     
         14 . The thermally conductive coating composition of  claim 1 , further comprising about 0-15% of a thermally-conductive, non-carbonaceous pigment. 
     
     
         15 . The thermally conductive coating composition of  claim 1 , wherein said waterborne polyurethane polymer comprises an aliphatic polyurethane resin synthesized from either H 12 MDI (4,4′-Methylene dicyclohexyl diisocyanate), or IPDI (isophorone diisocyanate), or a blend of the two. 
     
     
         16 . The thermally conductive coating composition of  claim 1 , wherein said additive comprises at least one additive selected from the group consisting of coalescing solvents, plasticizers, cross-linking agents, corrosion inhibitors, algaecides, and mildewcides. 
     
     
         17 . The thermally conductive coating composition of  claim 1 , wherein said at least one additive comprises at least one chemical surfactant. 
     
     
         18 . The thermally conductive coating composition of  claim 17 , wherein said chemical surfactant comprises at least one of Ethox E-SPERSE 131 and BYK Atlanta DISPERBYK®-2155. 
     
     
         19 . A thermally conductive coating composition comprising one or more of: a waterborne aliphatic polyurethane dispersion, a cross-linking agent, a coalescing solvent, fullerene nanoparticles, thermally conductive particles, at least one algaecide/mildewcide, a pigment, and a corrosion inhibitor. 
     
     
         20 . A thermally conductive coating composition comprising a waterborne aliphatic polyurethane dispersion, a polyfunctional aziridine crosslinking agent, propylene glycol methyl ether, tripropylene glycol n-butyl ether, fullerene nanoparticles, micaceous iron oxide, zinc 2-pyridinethiol-1-oxide, Ethox E-SPERSE 131, and HYBRICOR® 204.